生态环境学报2011，Vol.20Issue(1)：91-96,6.
半干旱黄土区退耕还林十年植被恢复变化分析——以陕西吴起县为例
Vegetation restoration since the project of returning cropland to forest in the semiarid Loess Plateau: A case study of Wuqi county, Shaanxi province
摘要
Abstract
The project of returning cropland to woodland or grassland has been put in practice for ten years on the Loess Plateau,China.Understanding the situation of vegetation restoration since the project is important for developing further strategy to sustain and enhance the effects.As a case study, change of vegetation coverage, vegetation types in Wuqi county, Shaanxi province, from 2000 to 2009 were analyzed based on the field investigation, DEM and remote sensing data.The results showed that land area with vegetation coverage more than 30％ was not up to 1％ of the total area of Wuqi in 2000, but it made up to 91.96％ of the total area in 2009.From 2000 to 2009, the area of shrub-land and woodland expanded obviously on the gentle slope, but vegetation recovery on steep and sunny slope was very slow.Woodland, shrubland and sparse woodland were in the extended-state.Mid-coverage grassland,low-coverage grassland and cropland decreased in area, being in the shrinking-state.关键词
黄土丘陵沟壑区/吴起县/立地条件/植被类型/变化状态指数Key words
the Loess Plateau/ Wuqi county/ returning cropland to woodland/ vegetation type/ index of variation分类
农业科技引用本文复制引用
许智超,张岩,刘宪春,朱清科..半干旱黄土区退耕还林十年植被恢复变化分析——以陕西吴起县为例[J].生态环境学报,2011,20(1):91-96,6.基金项目
"十一五"科技支撑课题项目(2006BAD03A0302) （2006BAD03A0302）
交叉学科北京市重点学科建设项目资助 （）
